文章信息/Info

Title:

Progress of Magnetic Field�睤riven Phase Transformation Materials

作者:

聶志華1; 王沿東1; 劉冬梅2

(1.北京理工大學材料學院，北京 100081)��
(2.北京有色金屬研究總院 有色金屬材料制備加工國家重點實驗室，北京 100088)

Author(s):

NIE Zhihua 1;  WANG Yandong 1;  LIU Dongmei 2

 (1.School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China)��
(2.State Key Laboratory for Fabrication and Processing of Nonferrous Metals, General Research Institute for Nonferrous Metals, Beijing 100088, China)

關鍵詞:

磁驅動相變; 磁感生應變; 馬氏體相變; 形狀記憶合金; 超彈性

DOI:

10.7502/j.issn.1674-3962.2012.03.03

文獻標志碼:

A

摘要:

磁驅動相變材料利用外磁控制下鐵彈馬氏體變體重排或磁誘導一級相變產生的形狀記憶效應來捕獲應變，兼具鐵彈形狀記憶與磁致伸縮功效特征。Heusler型Ni�睲n X  ( X =Ga 或In)系磁驅動相變合金材料具有磁感生應變大、能量密度高、反應速度快等優點，是未來重要磁傳感器和磁驅動器研制的關鍵。主要介紹了國內外Ni Mn Ga、Ni Co Mn In、反鐵磁體等磁驅動相變材料的研究進展，以及本課題組利用高能X射線衍射和中子散射技術對磁驅動相變材料的原位研究。最后，展望了磁驅動相變合金材料的發展趨勢。

Abstract:

Magnetic field driven phase transformation material is a class of smart material which combines the functional behaviors of ferroelastic shape memory and magnetostriction. The large magnetic field�瞚nduced strain obtained in magnetic field driven phase transformation materials can be achieved through two mechanisms, which include reorientation of martensitic variants caused by the magnetic field induced twin boundary motion and shape memory effect via magnetic field induced first order phase transformation. Heusler�瞭ype Ni Mn X ( X= Ga or In) magnetic field driven phase transformation alloys are potential candidates for magnetic sensors and actuators, owing to their large magnetic field�瞚nduced strain, high energy density and rapid response and so on. The research progresses of magnetic field�瞕riven phase transformation materials, including Ni Mn Ga alloys, Ni Co Mn In alloys and antiferromagnets, are summarized. And recent researches from our group are introduced, which are focused on in situ studies of magnetic field driven phase transformation materials using high�瞖nergy x�瞨ay diffraction and neutron scattering techniques. At last, future trends of magnetic field driven phase transformation alloy are prospected.